There are total 18 hours or 1080 minutes from 7am to 1am. In words, this duration is equal to eighteen hours or one thousand eighty minutes.
How many hours from
| 9AM to 4PM | 2AM to 6AM | 11AM to 7PM |
| 9PM to 1AM | 2PM to 8AM | 11AM to 9AM |
| 8PM to 6PM | 6AM to 1AM | 7AM to 4PM |
| 9PM to 5PM | 11PM to 5PM | 8PM to 2PM |
| 1AM to 2AM | 7PM to 4PM | 5PM to 1AM |
| 12AM to 8PM | 6PM to 3AM | 4PM to 9AM |
